Travel China, the first country to ground Boeing 737 Max in 2019, not ready to recertify plane March 1, 2021 Jayme Deerwester, USA TODAY Comments Off on China, the first country to ground Boeing 737 Max in 2019, not ready to recertify plane China is, along with North America and Europe, one of the biggest markets for Boeing Co. Approval by Beijing important for its commercial success.